Probably isn't rocket science, but I've noticed that a few types tend to have an uncanny resemblance to their integration point when alone or comfortable, regardless of health:
6s when at home enjoy little things like watching tv, sleeping, not caring and eating like 9s. I think 9-ish sloth is a very underestimated aspect of 6w7s especially.
7s in private or comfortable situations enjoy researching stuff, focusing on practicing an instrument, etc. and come off as more serious/introspective like 5s. 7s can be some of the biggest workaholics and nerds, at least in spurts.
8s in private are endearing and affectionate like 2s, even if they're being loud or abrasive about it.
4s can come off as vaguely 'disciplined' and prudish like 1s around certain people. For example, look at Jesse's ex girlfriend Jane (4w5) from Breaking Bad, who comes off as relatively disciplined (heroin addiction and all) compared to Jesse (6w7) who acts more like a 9 when with her. I don't think they even have to be comfortable to act like 1s.